Physics High School

The energy transferred to the water in 100 seconds was 155 000 J. specific heat capacity of water = 4200 J/kg °C
Determine the mass of water in the kettle.
Use Figure 10.
Give your answer to 2 significant figures.
Any help would be appreciated

The Energy Transferred To The Water In 100 Seconds Was 155 000 J. Specific Heat Capacity Of Water = 4200

Answers

Answer 1

Answer:

0.37 kg

Explanation:

I'm not a professor myself, but this is how I worked it out:

using the graph, after 100 seconds, the temperature is 100 degrees Celsius.

If we now substitute everything into the specific heat capacity equation, making the mass "m", we would come up with:

4200 = 155000/(m x 100)

If we rearrange and solve for m, we get 0.37 kg.

I'm not sure if I have done this correctly, feel free to correct me.

Hope this helps!

Answer 2

By using the specific heat capacity formula, the  mass of water in the kettle is 0.47 kg

Give that the energy transferred to the water in 100 seconds was 155 000 J and the specific heat capacity of water = 4200 J/kg °C

From the graph;

The initial temperature of the water at time zero is 22 degree Celsius

The final temperature of the water at time 100s is 100 degree Celsius

Change in temperature (T) = 100 - 22 = 78 degree Celsius

To determine the mass of water in the kettle, use the heat energy formula below

E = mcT

Substitute all the parameters into the equation

155000 = 4200 x 78 M

Make M the subject of the formula

M = 155000/327600

M = 0.47 kg

Therefore, the  mass of water in the kettle is 0.47 kg

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Explanation:

The light-year, alternatively spelled lightyear, is a unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometers (9.46×1012 km) or 5.88 trillion miles (5.88×1012 mi).

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2. Displacement is:

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4. What is the final position of this car?

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C. -5

7. What is the total distance the car travels during the WHOLE TRIP?

B. 8

8. What is the total displacement the car travels during the WHOLE TRIP?

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Answers

Answer:

8.33 kg

Explanation:

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f is the force

a is the acceleration

From the question we have

[tex]m = \frac{10}{1.2} = 8.333... \\ [/tex]

We have the final answer as

8.33 kg

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the distance of the car can move by velocity 15 m/s for time 5s is :
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Answers

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Explanation:

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Answers

Explanation:

Power=work done/time

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5. Fill in the blanks with either "More," "Less," or "The Same."
a) If an object has more mass than another object, it will accelerate_____
b) In order to accelerate an object more, one would need to apply_____ force.
c) If an equal force is applied to two different objects, the less massive object will accelerate____

Answers

Answer:

Explanation:

5. Fill in the blanks with either "More," "Less," or "The Same."

a) If an object has more mass than another object, it will accelerate_less____

b) In order to accelerate an object more, one would need to apply_more____ force.

c) If an equal force is applied to two different objects, the less massive object will accelerate_more___

The answer is less, more and more.

Relationship between mass and acceleration

If an object has more mass than another object, it will accelerate less. In order to accelerate an object more, one would need to apply more force. If an equal force is applied to two different objects, the less mass of an object will accelerate more

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Answers

Answer:

Answer to number 6 = 5 seconds.

Explanation:

Distance = Speed x Time.

So  

t

=

d

s

t

=

5

1

=

5

So the bug will take 5s.

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Explanation:

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then,t=d/s

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t = 139m/13 m/s

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Answer:

Large-diameter pipelines can be used to convey water over large distances, while smaller-diameter pipelines can be used to provide bulk or individual supplies at the point of use. Aqueducts are canals used to bring water from a river or reservoir to a water distribution center.

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Air

Electricity

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Answers

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Answers

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Answer:

Cr(OH)3 + 3 HCLO4 → Cr(CLO4)3 + 3H2O

Stoichiometry balancing +

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cast iron on cast iron

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Answers

Answer:

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Answers

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PLS MARK BRAINLIEST

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Answer:

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ОО
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Answers

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Answers

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✍️ By Benjemin ☺️

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Answers

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Answers

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Answers

x
=
√
15
2
+
15
2

x
=
15
√
2
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Answers

Explanation:

By the way.. What's the meaning of ANTISOCIAL??..(ㆁωㆁ)

If you tell me the meaning of it, I'll tell you my answer too(ㆁωㆁ)

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Question 1 (Mandatory) (1 point)
An 8 kg basketball is dropped from a height of 10 m. Calculate the Gravitational
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Answers

Answer:

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What is the force of a object that has a mass of 7 kg and an acceleration of 6 m/s/s

Answers

Answer:

42 N

Explanation:

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From the question

mass = 7 kg

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We have

force = 7 × 6 = 42

We have the final answer as

42 N

Hope this helps you

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Answer:

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False

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Answer:

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